Hillcrest Laboratories filed a complaint with the International Trade Commission, as well as a patent infringement lawsuit, over the motion-control technology in the Wiimote and the Wii's graphical user interface. "While Hillcrest Labs has a great deal of respect for Nintendo and the Wii," the company stated, "Hillcrest Labs believes that Nintendo is in clear violation of its patents and has taken this action to protect its intellectual property rights.'' Hillcrest currently sells the Freespace technology in their own Loop controller (pictured), and licenses it out to companies including Logitech.
If the International Trade Commission rules in Hillcrest's favor, imports of the Wii and Wii controllers could be blocked. If the lawsuit is successful, Nintendo would most likely just owe Hillcrest a bunch of money.